A man who left his full brother or sister and his grandfather

Ibrahim reports the statement of Sayyiduna Abdullah (may Allah be pleased with him) that in the case of a sister and a grandfather, each of the two will receive half.

Fudayl reports from Ibrahim concerning the case of a man who leaves behind his grandfather and his full brother: according to the statements of Sayyiduna Ali, Abdullah and Zayd (may Allah be pleased with them), the grandfather and the brother are each entitled to half of the estate. And concerning a man who leaves behind a grandfather and full brothers, these authorities said that one third of the estate is for the grandfather and two thirds of the estate are for the brothers.

Abu Bakr (Ibn Abi Shaybah) said: This case works out from two shares when the heirs are a sister or a brother and a grandfather: half of the estate is for the grandfather, and half of the estate is for the sister or the brother. If they are two brothers, one third of the estate is for the grandfather and two thirds of the estate are for the two brothers.